Filmen viser i tegnefilm principperne for vandets fastholdelse i jorden.
| Original title | Vandet i jorden |
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| Danish title | Vandet i jorden |
| Leikstjórn | Per B. Holst |
| Screenplay | A.O. Rasmussen, H.C. Aslyng |
| Director of Photography | Ib Steinaa |
| Editor | Per B. Holst |
| Land | Danmark |
| Domestic distribution | Statens Filmcentral |
| Technical info | 90 meter, 16 mm, Sort-hvid, Tone |
Companies |
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| Production company | Laterna Film |
| Commissioned by | Landbrugets Informationskontor (L.I.K.) |
| Domestic distribution | Statens Filmcentral |
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Instruktion |
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| Instruktion | Per B. Holst |
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Manus |
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| Manus | A.O. Rasmussen |
| Manus | H.C. Aslyng |
| Kommentarer | Helmer Rasmussen |
| Kommentarer | A.O. Rasmussen |
| Kommentarer | H.C. Aslyng |
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Foto |
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| Foto | Ib Steinaa |
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Klip |
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| Klip | Per B. Holst |
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Andre credits |
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| Sagkyndig | H.C. Aslyng |
| Sagkyndig | A.O. Rasmussen |
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Speaker |
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| Speaker | Per B. Holst |
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